Isaac c



UNITED STATES PATENT OFFICE.

ISAAC C. HART, OF CINCINNATI, OHIO, ASSIGNOR .OF ONE-HALF TO WILLIAMGREY WADE, OF SAME PLACE.

PLASTERING COMPOUND.

SPECIFICATION forming part of Letters Patent No. 406,215, dated July 2,1889.

Application filed March 20, 1889. Serial No. 804,040. (No specimens.)

To all whom it may concern: The compound, after it is applied, will dryBeit known, that I, ISAAC C. HART, a citithoroughly in less than oneday, thus avoidzen of the United States, and a resident of ing the usualdelay as Well as the uncleanli- Cincinnati, in the county of Hamiltonand ness accompanying the ordinary work of plas- 3 5 5 State of Ohio,haveinvented certain new and tering.

useful Improvements in Plastering Com- I have given above What I believeto be the pounds, of which the following is a specificabest proportionsfor a plastering compound; tion. but as these may be varied withoutdeparting My invention relates to a plastering comfrom the spirit orscope of my invention I do 40 IO pound for the inside finish of Walls,ceilings, not WlSll to be strictly limited to the exact &c., to be usedin place of the common plasproportions named. For instance, a goodcomtering-mortar. Its object is to supply a cheap pound may be made byusing two parts each compound which can be quickly mixed for of sand andasbestus and three parts each of use, easily applied, and which will dryout plaster-of-paris and lime. I 5 quickly and present a smooth hardfinish. My compound is also valuable for deaden- My compound is composedof equal parts, ing floors, as it is practically fire-proof. by measure,of clean fine sand, plaster-of-paris, I claim asbestus, andlime. Thelimeis slaked, dried, 1. A plastering compound composed of sand, and sifted.The asbestus may be either the plaster-ofparis, lime, and asbestus,prepared 50 2o fiber or the ground or finely-pulverizedmatesubstantially as hereinbefore set forth.

rial. I prefer the latter because it is cheaper. 2. The hereinbeforedescribed plastering The ingredients are thoroughly mixed in thecompound, consisting of equal parts, by measdry state and put up forsale in sacks or barme, of sand, plaster-of-paris, lime, and asbesrels.The compound is prepared for use by tus mixed together in a dry state,substan- 55 25 adding sufficient Water to bring it to the tially as andfor the purpose set forth.

proper consistency, and it is applied as the ordinary plastering ormortar; but one coat ISAAC C. HART. of this compound is applied for allordinary purposes, and this need be only about half the WVitnesses: 3othickness of the common plastering-mortar, as GEO. J. MURRAY, in dryingit becomes very hard and compact. V. G. \VADE.

